import java.awt.Graphics
import java.awt.Graphics2D
import javax.swing._

object Hello {
    def main(args: Array[String]) {
        var frame = new HelloFrame("Hello, World")
        frame.setVisible(true)
    }
}
 
class HelloFrame( title: String ) extends JFrame {
    setTitle( title )
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
    setSize(640, 480)

    var panel = new HelloPanel()
    add( panel )
}
 
class HelloPanel extends JPanel {
    override def paintComponent(g: Graphics) {
        var g2 = g
        g2.drawString("Hello, Java2D World!", 0, 16)
    }
}